 package com.Java.train.common.config;

 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;
 import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;

 /**
  * 统一注解，解决前后端交互Long类型精度丢失的问题
  * 公众号：甲蛙全栈
  * 关联视频课程《Spring Boot + Vue3 前后端分离 实战wiki知识库系统》
  * https://coding.imooc.com/class/474.html
  */
 @Configuration
 public class JacksonConfig {
     @Bean
     public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
         ObjectMapper objectMapper = builder.createXmlMapper(false).build();
         SimpleModule simpleModule = new SimpleModule();
         simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
         objectMapper.registerModule(simpleModule);
         return objectMapper;
     }
 }